ENS 57647
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ENS Event | |
|---|---|
09:00 Apr 5, 2025 | |
| Title | Both Trains of Reactor Building to Suppression Chamber Vacuum Breakers Inoperable |
| Event Description | ?
The following information was provided by the licensee via phone and email: At 0400 CDT on 4/05/2025, it was discovered that both trains of reactor building to suppression chamber vacuum breakers were simultaneously inoperable. Due to this inoperability, the system was in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: Both trains were restored to operable on discovery. The inoperability was a result of a configuration control issue following their refueling outage. The licensee will investigate the cause of the configuration control issue. |
| Where | |
|---|---|
| Quad Cities Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+3.55 h0.148 days <br />0.0211 weeks <br />0.00486 months <br />) | |
| Opened: | John Ellisor 12:33 Apr 5, 2025 |
| NRC Officer: | Brian P. Smith |
| Last Updated: | Apr 5, 2025 |
| 57647 - NRC Website
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